A friend who can communicate sincerely without any interest disputes is a true friend.
The most basic condition for being friends is that only being friends can make friends.
A friend is not the first person who thinks of you when he or she is in trouble, but the first person who thinks of you when you can help him or her.
A friend who knows that you will try your best to help you when you are in trouble is a true friendship.
In today's real society, good friends are people with economic interests.
Ordinary friends just chat together occasionally. Good friends want to take advantage of you. Close friends are ambiguous. Intimate friends and best friends will try their best to help you when you are in trouble (only when your economic environment (good or bad) changes greatly, do you really need to know which is your best friend or best friend).
People who don't help you when you are in trouble are also friends! That's just a fair-weather friend.
I hope my answer is helpful to you! !